Book-drilling machine



April 30, 1929. A. a. ROE 1,710,744

Boox mumnw MACHINE Filed March 27, 1925 9 Sheets-Sheet l *sia .lY-Y; TM- y Qvymmtoz ALEXANDER BROE, 1

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April 30,1929. A. a. Roliv l i 1,710,744

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` BooK DRILLING MACHINE F'led March 27, 1925 9 Sheets-Sheet 3 ALEXANDER B. ROE,

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April 30, 1929. A. B. ROE 1,710,744 BooK DRILLING MACHINE Filed larchf'Z', 1925 9 Sheets-Sheet 4 /3/ /34 IEE 7 amor,

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BooK DRILLING MACHINE Y Filed March 27. 1925 9 Sheets-Sheet 5 4 l? Y n v S35-'f 5- ALEXANDER B. Roc,

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April 30, 1929. y 'A. B. RoE 1,710,744 BooK DRILLING MACHINE l Filed karen 27, 1925 9 sheets-sheet 6 1U 76 :44

ALEXANDER B. Roa,

April 3o, 1929;

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Filed March 27, 1925 BooK DRILLING MACHINE April 30, 1929. A BV, ROE 1,710,744

BOOK DRILLTNG MACHINE Filed March 27, 19254 9 Sheets-Sheet 9 /fO E l @es f 6l i 56 5* `4 s gwventoz l ALEXANDER B. Rot. 33nd @n alito@ nu* Patented Apr. 30, 1929.

UNITED STATES ALEXANDER .B. ROE, OF ATHENS, OHIO.

BOOK-DBILILING MACHINE.

Application tiled March 27, 1925.

This invention relates to boolisbinding machines, and has particular reference to such a machine havinpy means t'or forming, and applying, a metal buck to a particular volume undc:I construction.

"lhe present invention contemplates a machine of the above mentioned character having' means for receiving' a volume ot' matter to be bound, retaining such matter in position, measuring and shaping;- a metallic back in accordance with the size of the volume, and retaining' such metallic back upon the volume duringn the drilling;V and binding process.

The invention further contemplates the use of safety means,` wherebyr the operation of the drilliingr mechanism "will be prevented duringl the adjustment of the drills, and further, to prevent the adjustment ot' such drills while the machine in operation.

Other inniortant objects and advantages of the invention will be readily apparent durine` the course ot the following description.

In the accompanying drawings:

Fig. 1 is a perspective view of a machine cmbodyingy the invention;

Fig, 2 an end elevation thereof;

Fig. 3 is a plan View thereof;

Fig. 1 is a front elevation view;

Fig. is a central vertical longitudinal sectional view thereof; i

Fig. 6 is a horizontal sectional view, taken on line 6-6 of Fig. 2;

Fig. 7 is a vertical sectional view through a pressure har and associated elements;

Fig. 8 a similar view, but with theparts in slight-ly different position, preparatory to drilling; i

Fig. i) is an enlarged vertical sectional View through a measuringr and shaping mechanism for the metallic backs;

Fifr. 10 a similar view showing the first raging and bendingr operation;

i Figi'. 11 is a similar view illustrating the final shaping of the metal back;

Fig'. 12 is an end elevation of a met-al back shaped for application to the volume;

Figi'. 13 "is a perspective view of a completed volume;

Fig. 14 is an elevation of a pair ot interlocking; binding nails employed in the bindins;

Figi. '15 is a sectional `view through an adjustable drill mounting.

Serial No. 18,797.

l Fig. 1G is a side elevation of a safety latch in one looking position; and

Fig. 17 is a similar view with the part-s moved toa second locking position.

Referring' specifically to the drawings, the numeral 10 designates a rectangular "base trame member. This base member Carries vertical, parallel. supporting, and guide rods 11, 12, 13 andltyrigidly secured thereto. The rods l1 and 12 at their upper ends are connected by a horizontal cross har `15, and the bars 13 and 14 are connected at their upper ends by a horizontal cross bar 16,both the bars 15 and 16 `beingrigidly attached to these rods. A transverse horizontal bar V17 bolted, or otherwise attached, `to the bars .15 and 16 adjacent their forward `ends.` This har 17 forms a partof a measuringiand shaping` mechanism, to be hereinafter described. The rods 11 and 12, and 13 and 14, carry bars 18 and 19 rigidly secured thereto, and in parallel relation to the bars `15 and 16. Rigidly attached to ithe bars 15 and 18 a vertically arranged `supporting bar .20,

and a similar bar `21 is attached to the bars 1G and 19. both hars 20 andi21 lying iparallel to the rods 12 and 14,. i

The nume al 22 designates a work table as a Whole, upon Whichthe volume to ibo bound is supported and clamped in position during the` drillingr operation. Thistable comprises ay top 23, bolted, or otherwise securethat its forward edge to a transverse bar 24, and at its rear edge to a transversehar 25. The bars 24 and 25 are carriedby longitudinally exteiitlini,r guide rods 26. having a sliding bearing in guidcdbracltets 2'1".. The guide brackets 27, in turn, are slidably mounted npon the guide rods 12 and 14. The supporting bar 21 has bolted, `or otherwise secured, to its upper face a plate 28, provided at its forward edge with eqnidistantly spaced notches, as indicated at 29, and hinged at its rear edge, as at 30, tothe bar 124. The bar 2l is arranged between the bars 2() and 21, but has no positive connection therewith. The bars 20 and 21 are provided with notches 31, as clearlyY indicated in` 16 andl'. These notches are adalited to receive pins 32 extending outwardly from the ends of `the bar 24, and `in normal position of the bar 24 `these plus lie wholly within the notches 31, and when in such `position movement of the table 22in`a vertical direction is prevented.`

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The bain! 20 and 2l carry lateral extensions 33 adjacent their lower ends and slightly below the notches 3l. These extensions B3 i re adapted lo have pirotally mounted thereto latch members Sti, notched as at Si." and provided with an uiiwardly extending' finger 3G. .fis ciearl y shown in Fig. 17, these latch 1ne1nhere ill are adapted. to partake ot Vertical lnorement whereby the lingers 36 will pass over the piu 3&2 to thereby retain such pin in, the slot Ell, 'tor a. purpose to be hereinafter described. The bars 20 and 2l are also provided with depending, pivotally mounted, coacting', .latch inenibers 3T adapted, when in one position, to swing into the path of movement oit the ringer 3G. The purpose oif this latch member 37 will be fully set tort-h hereinatter.

its before stated, the table 22 iis adapted to receive thereon the mattei' to be bound. leans are eniiployed 'tor bindingr the material in preition npon the table, and euch means comprise a preesure liar.l indicated as a whole by Vthe ninnerz l 3S, and a` pair of pa 'allel bare 39, carryingi at their opposite ends blocks` ,40. Rigidly attached to the lower edges olf the bars 2li) a pressure plate 'tl, identical in size and .shape with the plate 28, and arranged para llel therewith. The plate il is proiided upon ite 'torward edge with eepiidistantly spaced notches 4Q, corresponding' to notches '29 and ar 'anged in Vertical alignmenttherewith. This prensnre bar is adapted to Vimitille ot vert-ical movement with reepect to lthe plate 28, and the means to carry out this movement comprises a pair ot lixed. vertically a r 1anired, screws d3, haw ingr their lower ende rigidly attached to the bar 2li. The liloelo Ll() carry worms 44 and worni-Awhcele the worin-wheels 45 being threaded Vupon the screws` 4:3 but fixed within the boxes itil, and beine' :tree to rotate the ein. lfhe'wornie let are in turn mounted upon ar `transverncly extending' shaft 4:6 having bearings within exteneions of the bloei/rs 410. The sha'lt #t6 extends outwardly et the traine ot the machine and carries at its enter end a hand-wheel 17, having a hand crank 4 3. It in therefore. obvious that rotation of the. ehaft't Lt6 will resultin the rotation of the worin wheele l, te thereby cause the pressure bar 38, and associated elements, to partaleot vertical reciprofatory movement toward, or away trein, the conetine' plate 28. It wi ll theretore be seenv that a `ifolnme placed uiionjt-he table may be securely clamped in position thereon ter the purpose el drilling, etc.

The table 9.2 carries an evener board t9 adjustable thereon through the medium otl a elet 50 and a screw l. The numeral :72 designates a combined auxiliary work table and. evener board. This table 52 arranged adjacent: the -troniy ot the machine and lies tranerersely thereof.` The table 52 pivotally .supported7 as at 5?), to liraciicts :"il. rarried by the bars i8 and 1,9. and ifi-1 adapted to swine in a` rerti 'al plane to a position as ,indicated in dotted lines in Figs. 5 and 7, which position brings the plate in direct conta with the torward edges ot the plates 2b' and i-l. It will there tore be seen that through this means the volinne may be conveniently crened with respect to the torward edges of the plates 8 and Iil. lllhcn io a horinontal position the table supported by vcrti Ial pa allel, support rods 55,V carried by the base it 'ame l0.

The means employed tor drillinpil a \.'olunn.i comprise upper and lower sets ot drillsv indi cated as a Whole by the miniera 56 and 5T. In the present instance I `hare i i tour upper drills and tour lower drills, all though it is to be understood that this-1 inunber may ary in accordance with the needn arising' duringl lthe binding ol'A various; types ot volumes. The drill mcchanir-:nis ein ployed are identical, with the exception that the upper Het is inverted, and a .ler-:cription et one will sullice lor all. The drill nicchanieni embodies a housing" et provided with a Vertical opening' 59 tor receiving. a id snp-- porting, a rertic "y arranged rear Gt). The gear G0 lnesliee` with a gear (il :nipportcd within an openingv G2 termed within lle: housing 58. The gear Gl in eplined upon a Au stratcd drive shaft G3 haring' itsv bearinn:-, in the lower ect within the bars i8 and lll. and in the upper set within 'the liars l5 and lo.

rllie `gear G0 in rigidly atiacner to a rcrtical shaft (Sil carrying` a conren'ional type et' chuck The chucl; 'L35 is, adapted to receire and hold a con'rentioiiai type et drill GG. The honeing 58 ia slidably carried upon guide rods (37 and GT, secured ai, their ends` within the bars iS and it), and l5 and l epectively. Each drill housing, l` with its asseciatid elemente, may la. pende-lilly adjusted along 'the guide rods (ji. whereby the :f-aereral drille may be suitably arranged tor drilling; volumen` et raryii i widtlie. It might be stated at this pointy that the upper and lower drills :should he adjusted in Vertical alignment. Means are employed tor imparting; rotation to the shafts 63, enen moana comprisingr upper and lower sprockets (S8 and (it), which are in turn engaged by a sproef'eft chain TO. rl`he lowrr sha'l't G3 carrie-ij in addition to the sprocket G9, a second eirocliet il. The sprocket ie rigidly attached to the eliatt 63 and rotilted through the medium ot a rocket chain 72. "The eprocliet chain 72. in turn, engages a small eprocliet T3 carried upon the ,shaft et' a motor Tl. This motor Tft is suit ably supported Upon the base o"E thc one chine, as indicated at 7i'. A suitable #hield Tl may be employed to protect the motor troni drilling-s, incident to the drillniu ot the Volumes. It is, thiretore, obrioue that lee llt)

lll

rotation of the motor 74 will impart rotation to the shafts 63, through the medium of the sprocket chain 72, sprocket wheel 71 and sprocket wheels 68 and 69. through the medium of the sprocket chain 70. The several sprocket wheels may be covered by a housing 76 secured to the frame ot the machine in any convenient manner.

As clearly shown in Figs. 5 and 7, the normal position of the work table is such as to cause the plates 28 and 41 to over-lie and under-lie the drills 66. It therefore becomes necessary in order to drill a volume to move the table, and associated elements, rearwardly to a position whereby the drills 66 will be in alignment with the notches 29 and 42. lhen in the rearward position the table may be elevated, or lowered, upon the guide rods 12 and 14, to enable the operator to drill the volume from above and below. Then the table is in the forward, or normal, position, the pins 32 lie within the slots 31, thus preventing movement of the table in a vertical direction, as before stated. The means to shiftthe table rearwardly comprise a pair of links 77 arranged below the table 22 and pivotally secured to the bearing brackets 27. The links 77 normally lie in a forward past-center position, and are pivotally connected, at their engaging ends, by a rod 78, the upper end of which formed cylindrical and operates within slots 79 torined in the links 77. The rod 78 is carried by a suitable support 80,'in turn pivotally mounted, as at 81, to a transversely extending rod 82 carried by the base trame 10. Thus it will be seen that a rearward swinging movement of the member will result in the movement of the links 77. also rearward. As illustrated, the links 77 are connected with the underside of the table by means of a pin and slot arrangement 83. Thus, movement of the links rearwardly, or to their straight line position, will resultin the shifting ot' the table rearwardly, by reason of the sliding of the guide rods 26 through the brackets 27. Real-ward movement limited by the abutment of the bar 24 against the brackets 27, in which position the plates are properly positioned over the drills 66.

Means are provided to raise and lower the table and associated elements, after the table has been shifted rearwardly to disengag'e the pins 32 from the slots 3l. This clevating and lowering means comprises a pair ot rack bars Si arranged outwardly of, and rigidly attached to, the bearing brackets 27, and arranged in parallelism with the guide rods 12 and 14. The rack bars Sl have engagement with gears 85, rigidly attachedto a transverse shaft S6 having bearing in the `bars 18 and 19. The means for rotating the shaflt SG comprise a worm wheel 87 and a worin 8S. The worm wheel S7 is rigidly attached to theshaft S6 and is arranged outwardly ot' the gear The worm 88 is mounted upon a longit-mlinally extending shaft S9, and is adapted to mesh with the worm wheel `87. The shaft S9 is suitably supported in bearing blocks 90. carried by the bar 19. The shaft S9 extends forwardly ot' the numhine, and carries a hand crank 91. lt will, therefore, be obvious that rotation ot the hand crank 91 will result introtation of the worm S8, worniwheel 87, shaft Sti and, consequently, the gears 85. Thus tl rack bars St will be elevated, or lowered, depending upon the rotation of the parts,

and consequently the table and associated` elements. ldler rollers 92 are suitably pivoteil to the bars 18 and 19, adjacent the rear edges ot the rack hars Si, whereby such rack bar.-` will be positively held in engagement with the gears S5 at all times. i

`To facilitate the raising and lowering of the table 212. lneans are provided whereby the table and its assiliciated elements are counter balanced. This counter balancing means comprises a supporting bar 93, adapted to partake oit vertical movement upon fixed guide rods 91;, carried by the base yframe 10. The supporting bar 93 is connected to the upper ends ot the rack bars 9i through the medium ot' iexible members, such as a chain or cable 95, passing over pulleys 9G, suitably pivoted upon the rear ends of the bars 15 and 1G. The supporting bar 93 is adapted to receive a. plurality ott7e counter balancing weights 97, through the medium yot which the table and the work carried thereon may be conveniently balanced.

The member S9 is swung rearwardly by an operating handle 98, rigidly attached thereto. and means are elnployed for locking the table in the forward, or inoperative, position, through the medium ot the links 77, rod 7S, memberll, andtoperating handle 9S. This locking means comlniscs a pivoted latch 9S* adapt-ed to engage a` stationary, coacting, latch carried by `a rod 1:)1, extending transversely of the base frame 10. The latch 99 pivoted to the operating handlr` 98, as shown at .102, and 'carriers an extension 103 adapted to be engaged by the linger oit the operator. The numeral 101 designates a conventional type of electric switch for operating the motor 74.` It is unnecessary to describe the switch in detail, with the exception that it comprises an operating lever 105, arranged outwardly ot the casinglfiroper, and adapted to have pivotal engagement with a link 106, in turn pivotally carried upon the operating handle 98, as shown at 107. W'hen the operating handle is in the latched position, the table 22, andl associated ele1nents,`have been moved to forward, or inoperative.` position, and `the switch 10i has been moved to the ofi position, through the medium of the link 106 and leveil 105. Thus it will be seen that when the table is moved to the forward position, the drills are automatically stopped.

Duringr the operation of the machine, it etten becomes necessary to adjust the drills to accommodate volumes of varyingr It therefore becomes necessary to provide means for locking' these drills in position a-tter they have become set. To take care of this requirement the drill housings 58 are provided, upon their upper faces, with pins 108, adapted to be engaged by longitudinah ly extending, perforated, lock bars 109 and 11.0. The upper locking bar 109 has its ends bent rearwardly at a right angle, as clearly shown at 109', and has pivotal connection, as at 111, with suitable brackets 112, carried by the bars and 16. This pivotal connect-ion enables the bar 109 to be swung upwardly for disengagement with the pins 108 carried by the upper drill housings 58. By this means the operator is permitted to adjust the housings longitudinally of their supportingr bars 67. The lower locking bar 110 has its end bent rearwardly at a right angle, as at 110'. and is pivotally attached to the end bars and 21, as shown at 11.3, whereby s uch bar may be swung in a vertical plane, similar to the bar 109, to permit ot' the adjustment ot the lower drill housings 58 longitudinally of their support ing hars 07. Then it is necessary to adjust either the upper or lower drills it is desirable that the machine shall become inoperative. and to accomplish this, the locking.:V har 109 is connected with the latch 34, through the medium of a link 114, pivoted to the latch 34 by means of a pin 115. The locking bar 110 is connected with the latch 31 through the medium et a link 116, also engaging about the pin 115. Either the upper or lower bars, 109 and 110, may be moved independently of the other bar, but, in either case, it is desirable that the latch 34.- shall be swung upwardly upon its pivot 111 to the locking position, as illustrated in Fig. 17. The links 114 and 116 have a lost motion connection with the latch 311, as elmwn. through the medium of slots 114 and 110', whereby either link may move upwardly, to operate the latch 341, without disturbing the position of the correspondingr bar. Thus it will be seen that when either the locking bar 109 or 110 is lifted out ot engagementwith the pins 108, the latch 341 will .have moved upwardly, as in Fig. 17, and engages about the pin 32, to prevent rearward movement of the table 22 during such time as the bar is elevated. Thus i11- jury to an operator because of rotatingr drills is avoided, by reason of the :tact that all parts become inoperative when the table is in forward position. As a further sate- Lejuard against injury to the operator it is desirable that adjustment of the drills shall be prevented while the machine is in operation. To accomplish this the latch 37 has been provided as beiore described. Thus when the `table has been moved rearwardly the pins 32 have moved outwardly of the bars 20 and 21, and the latch 37 has swung to the vertical position, by `gravity, and lies in the path of movement of the finger 36. Thus, elevation ot the bars 109 and 110 will be prevented because ot their engagement with the latch 234-, through the medium of the links 114i and 11G. It will therefore be seen that the operator is safeguarded against injury by the rotating drills in either position of the machine.

As stated, the bars 109 and 110 are pro vided with a plurality et pertorations adapted to engage over the pins 108 carried by the drill housings. These perjtorations are equidistantly spaced and correspond, in number and alignment, with the notches 29 and 12 ot the plates 28 and 111, whereby the drills will be positively and correctly positioned for the passage ot the drills through the notches 29 and 42, when the table is ele vat-ed or lowered.

Means are provided to accurately measur- .ingl and shaping.Y the metallic backs to be. applied to the volume. These backs comprise a metallic lsheet pre uably covered by canvas. or other material, cemented thereto. The material ot these backs forms no part et the present invention, but as the backs are supplied to the jobber in standard sizes in sheet form, it becomes necessary that the material shall be suitably measured and shaped to fit the particular volume under construction.

Bolted, or otherwise attached, to the bar 17 is a plate 117 extending longitudinally ot said bar for approxinlately its entire length, and parallel therewith. The plate 117 extends above the upper edge of the bar 17 and has its rear tace beveled, as at 118. Bolted, or otherwise secured, to the upper tace of the bar 17 is a second har 119, the upper tace of which is tlush with the upper edge ot' the plate 117. The bar 119 is spaced from the plate 117 and has its forward :tace beveled, as at 120, corresponding to the bev eled tace 118. An outer plate 121 is rigidly held in spaced relation to the plate 117, and is of approximately the same size thereof. This plate has itsy outer upper edge beveled, as at 122, correspondinpr to the beveled face 118. The plate 121 is held in spaced relation to the plate 117 by spacing washers 123, and the plate held in position by bolts 124. Mounted between the plates 117 and 121, is a grange plate 125, slightly longer than the .plates 117 and 121, and adapted to partake of vertical, reciprocatory, movement between these plates. The plate 125 provided with a plurality ol vertically arranged slots 12hl for permitting the movement of the plate about the spacing washers 123. Ribs 127 are formed upon the near face ot' the gauge plate 129 carry pivot pins 132,.in turn receiving eyes 133, carried by a` bendingl bar 134:. The bar 131 is arranged in parallel relation with the bai' 17, and its outer face approximately flush with the outer tace ot' the plate 117 Q This har 1341 is adapted to swing forwardly and downwardly upon the pivots 132, as clearly shown in Fig. 10. Arms 135 are carried by the upper face of the bar 134 to :facilitate the swinging of this bar. Means are provided for raising and lowering the plate 125, in accordance with the thickness ot the volume under construct-ion. This means comprises arcuate cam members 1313, pivotally attached to the rods 11 and 13 by means ot' fixed brackets 137. These members carry rearwardly extending operating arms 133 adapted to be engagedby lugs 139, carriediby plate 140, in turn carried by the pressure bar 33. Springs 141 are attached tothe arms 133 and to the bar 17, as at 142. These springs normally tend to urge the arms 133 upwardly against the lugs 139, and thus movement of the bar 39, up or down, will result in the swinging of the arms 133` uponi their pivots 137 t0 cause the cams 136 torotate against the lower edge ot the plate 125, to raise or lower such plate. Thus the elevation of the plate is deter mined by theelevationot the pressure bar The. plates 140, carrying the lugs 139, are normally urged outwardly by means ot' springs 143 surrounding'rods 1411 carriedbetween the bars 39, and hauino pivotal conneetioii` with bolts 145, carrietby the angular extension of the plate 140,1and operating through asloti loomed in theouter plate 39. Thus it will be seen that the plates 140, carrying the lu s 139, may be moved inwardly against t ie tensionof the springs 143 when it becomes necessary for the arms 138 to engage against the upper lugs 139. It

will be noted I.` have provided `an upper and a lower set of these lugs 139. The lower set operates under normal conditions, and the upper set under abnormal conditions, as will be hereinafter inorefully set out. The purpose of` these upper lugs is to enable an o eratior to accurately measure, and cut o oi' turn under, surplus material of the metallic back, when it becomes necessary to employ large sheets in the binding of very small volunies. As clearly shown, the lugs 139 are beveled whereby, when the pressure bar is again elevated,"they willpei'mit the passage of the arms 138 to a` position beneath the lower lugs 139.

The operation of the device is as follows:

The material to be boundpineluding suitable hinged covers,.ie placed-upon thetable 22, beneath the pressure bar 38, with its longitiulinal edgesagainst the evener board a9. The small portion otlthe cover adjacent its hinge is e ual in width tothe binding edges of the ack. The table 52is` then swung upwardly to the position Where it *rests against the edges of the plates 28 and` 41, and the material isthen moved forwardly until its edges lie evenly there-against. The hand wheel 47 is then rotated in adirection to cause the pressure bar 38 to move downwardly upon the material to be bound, thus clamping it firmly in position upon the plate 28. If necessary the drills may now be adjusted longitiuilinally of the bar G7 tobring two, or more drills beneath, and above, the volume at points` desired fondrilling. The volume now in position alid the next operation is the forming of the back therefor.

The pressure bar having vbeen moved to clamping position against thevolume, has moved the arms 138. a` predetermined dis tance, and has caused the cams 136 to rotate against the lower edge ot the plate 125, thus moving this plate toa predetermined position ot' adjustment for taking up the excess material of the backs. A sheet of material is then placed in the space between tlie plates 117 and `121,` and rests upon the upper edge of the plate 125. In this position, the depths to which Jdie Ina- `terial extends` correspond to one-halt `of the excess material to betaken up, in accordance with the thickness of the particular volume under construction.` The bar 134 is then swung downwardly as illustrated` in Fig. 1t), bending the material over the beveled tace 122, ascleai'ly shown.` To eom plete this bending, the bar 134 is raised and the materialV removed` and again placed against the beveledi face122. The bar 134` is brought down a second time, which com plates the initiali bending. The `material is then reversed and the other side bent back upon itself, each bending` representing a half of the excess material and the two bendings taking up all the `excess material. It now becomes `necessary to bend theed es of the back material tol a right angu ar position, asillnstrated in Fig.v12. The degree of this bending is the same in all vol unies. The bent portion illustrated at 146 is then inserted in the space between the beveled faces 118 and 120, so that its edge rests upon the top of the bar 17,` and the bar 1341s then swungupwardly to the positionillnstratedin Fig. 11. It isto be under stood that these bending operations take lll place upon both edges of the back material. The back is now formed as shown in Fig. 1Q, and is then placed with its bent portions over the forward edges of the plates 28 and 41, so that itoverlies the notches Q9 and 42. The volume now ready to be drilled.

The operator grasps the handle 98, with one finger lifts the latch 103, and raises the lever 98 to cause the table to move rearwardly. This movement in turn operates the switch 104C for starting the motor and imparting rotation to the drills. The operator next rotates the handle 91 for elevating and. lowering the table. The table lowered first upon the drills of the lower set and then elevated for engagement with the drills of the upper set. The drilling operation Ais now complete, and the opeii'ator again grasps the handle 98, swinging it downwardly for moving the table forwardly, and incidentally stopping' the rotation of the drills. Interlocking binding nails, similar to those illustrated in Fig. 14, are now inserte-d in the drilled holes, from above and below the bound volume.

lt now becomes necessary to release the volume so that the nails may be lirmly set in place. In order to do this it is first nec-- essary to raise, the pressure bar sui'liciently to enable the operator to remove the volume. inasmuch as the back extends over the edges of the plates Q8 and l1, movement o1' the pressure bar upwardly would ordinarily disarrange the volume. It is to avoid this that the plate 28 has been hinged at its rear edge. Thus` when the pressure bar is raised. slightly to release the volume, the back is raised also, carrying with it the lower plate 28. It is then only necessary for the operator to pull the volume forwardly until its bound edge rests upon the table 52. A few blows from a hammer will rmly set the locking nails in place.

As before stated, it often becomes necessar f to bind unusually thin volumes, and .in the absence of the proper size back material, the operator is obliged. to employ7 back material much too large, and it is then a matter of overlapping the excess material, or cutting it down to the proper dimensions. To determine the proper amount of material to trim off, the operator moves .the plates 14;() inwardly against the tension of their springs, allowing the arms 138 to be drawn upward by the springs 141, so that such arms will bear against the upper lugs 139. lhe pressure plate is then lowered to clamp the material upon the table. The back material is then inserted between the plates 117 and 121 as before, and the depth to which the material enters between the plates indicates the amount of excess material to be removed from the hack. The measuring and forming of the back is then identical as before. As the presure bar is again elevated, the arms 138 will pass over the lugs 139 automatically to their normal position.

It is to be understood that the form of the invention herewith shown and described is to be taken as the preferred one, but it should he understood that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined elainus.

Having thus described my invention, what I claim and desire to secure by l'ietters Pat ent of the United States is:

1. ln a book binding machine, the combi nation with a work table of means for clamping eaves of a volume thereon, drill mechanism vfor piercing the leaves of the volume, means for advancing and retraeting said table so the leaves are under or retracted from under the drills, locking` mechanism for preventing the ruieration of the drills when the table is in retracted position and permitting the drills to operate when the table is in advanced position.

ln a book-binding machine, the combination with a work table, of means for clamping the leaveri; of a volume thereon, means for advancing and retracting the work table, means for raising and lowering said worlt table, and drill mechanisms above and below said n'orli table into engagement with which the leaves of the volume are lufought when the table is raised and lowered after having been advanced in a position between the drill mechanisms.

25. 1n a book-binding machine, the combination with a. work table and a clamping mechanism carried thereby, of means for raising and lowering said work table, means for advancing and retracting said Work table for properly positioning matter to be bound for drilling, horizontally disposed drill actuating shatts disposed above and below the level of the work table, a motor, means for driving from said` motor to both of said shafts, a plu `ality of drills adjustable along each of said shafts and driven therefrom throughout all positions ol ad- ]ustment, a locking element for loc-king the drillsin adjusted position, and elements connected to and controlled by said locking element for preventing operation of said drills whenever said locking element is out of locking position.

4. In a book-binding machine, the combination with a work table mounted for forward and rearward movement, of a drill mechanism associated therewith, said table when in the forward position adapted to properly position matter held thereon for drilling, a motor for driving the drill meehanism, a switch for controlling the motor, and a common operating handle for actuating said switch and shifting said table so that the motor can only be started when the table is in its forward position.

5. A machine of the character described, comprising a table mounted 'For both horizontal Vand vertical movement, a drill mechanism associated therewith comprising a plurality of adjustable drills, a locking mechanism :i'or preventing movement of said drills to effect an adjustment thereof, and means for preventing movementof the said lockingl mechanism when the table is in its real-most posit-ion.

6. In a machine of the character described, the combination with a table provided with locking extensions, ot' a member upon each side ot' the table having a recess into which said extensions enter when the table is in forward position, latches adapted to engage the said extensions, a drill mechanism comprising a plurality of longitudinally adjustable drills, a locking bar for holding said drills in adjusted position, and a connection between said locking bar and said latch.

7. In a machine of the character described, the combination with a table provided with locking extensions, of a member upon each side ot the table having a recess into which said extensions enter when the table is in forward position, latches adapted to engage the said extensions, a drill mechanism comprising a plurality ot' longitudinally adjustable drills, a locking bar for holding said drills in adjusted position, a connection bet-ive position by said extensions when the table is in forward position, and movable, when said extensions are withdrawn by the rearward movement of the table, into alignment with said latches to prevent operation of the same. j

8. In a machine of the character described, the. combination with a table mounted for forward and rearward movement and for vertical movement, of a clam ing means associated with said table, drll mechanisms above and below the level of said table, the drill mechanisms comprising a horizontally extending bar having a plurality ot' drill housings longitudinally ad'ustable therealong, locking bars for loc ing said drill housings in adjusted positions, a connecting rod extending between said locking,r bars, a latch lever having lost motion connection with said connect-ing rod and comprising a hooked extremity, an extension upon the table with which said hooked extremity is adapted to engage, and a (xo-operating Latch member held ut of position by the extrem-` ity of the tab e when the table is in forward position and movable into alignment with the latch to prevent operation ot the latter when said table is moved rearwardly.

ALEXANDER B. ROE. 

